Lubricating device



Jan.. 2, 1940. R, TEAR v 2,185,282

LUBnIcATINc DEVICE Filed nay 24, 1957 A'ITORNEYJ.

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Patented Jan. 2, 1940 l UNITED STATES PATENT ori-lcs Lubricationporation' of Delaware Corporation, Chicago, Ill., a corsppueoon my 24,1931, serial Nc. 144,391 n claims. (cl. rc1-r1.1)

This invention relates to lubricating devices and more particularly topumps for dispensing lubricant or the like and to cartridges forming adetachable source of supply for such pumps.

Une oi the objects of the invention is to provide a pump in which a fullcharge of lubricant is always supplied.

Another object ci the invention isl to provide a lubricating deviceincludingel pump and a lubricant supply cartridge in which the contentsot the cartridge is positively fed into the pump.

Still another object of the invention is to provide a cartridge for usewith aV lubricant pump in which the cartridge may be attached to thepump quickly and easily and the cartridge contents may easily be forcedinto the pump.

The above and other objects of the invention may be accomplished byproviding a pump having a reed member slidably molmted in its inlet torreciprocation in a. cylindrical extension formed on a cartridge armmdits outlet opening. lllhe cartridge is preferably secured to the pump bya fastener plate which serves also to reinforce the cylindricalextension.

@ther objects, advantages and novel features of the invenon will beapparent from the following description when read in connection with tbeaccompanying drawing, in which:

Figure l is a central section with parts in elevation ol a lubrlcab'ngdevice embodying the in ventlon;

Figure 2 is a partial section similar to Figure l in a erent plane; and

le d is a section on the line III- III of g 1 i i: e 2,

The illustrated device includes a base I' mounted on wheels l2 andcarrying a motor cylinderlt in which a piston i6 having a piston rod ltis slidably moimted. Compressed air or other suitable actuang duid isadmitted to the cylinder ld through a tting 2l under the con trol or avalve indicated generally at 22 and having a control rod 2li. A collar25 surrounds the control rod and is engaged by springs 28 on itsopposite sides. The collar 26 is carried by a bracket 30 se to thepiston rod I3 so that the valve will be moved in accordance with pistonmovement, suitable spring detents 32 being provided yieldingly to holdthe valve in either ot its end positions.

The piston rod ld is secured by a resilient coupler tl to a pump plunger3E which is slidably mounted in a cylinder 38, which cylinder has a sideinlet 4U and an outlet 2 which is controlled by a check valve M andwhich is adapted to supply lubricant through a suitable hose or nozzleto any desired point of use.

Lubricant is supplied to the pump by a cartridge 46 formed with apermanent end closure 48 at one end which has a central outlet opening 6dened by an outwardly extending cylindrical liange B. The cartridge issecured to the pump by means of a fastening plate 52 which surrounds andreinforces the flange 50 and which is formed at its edge with aseries'of notches to, provide a 10 bayonet connection with a series of lugsidsecured to the pump Varound the inlet opening. The opposite end of thecartridge is closed by a .piston or follower v5l; slidably fitting inthe cartrdge body. Preferably a piston guide 58 oi the 15 type morefully disclosed and claimed in my Patent No. 2,121,996 is provided tokeep the piston in alinement in the cartridge and to urge it downwardlytherethrough.

During storage the cartridge outlet opening is closed by means of avalve plate 60 mounted in a suitable cage 62 within the cartridge andurged against the outlet opening by a spring $4. When the cartridge isturned upside down, as shown in Flgure l, to secure it to the pump, thevalve 60 prevents leakage of lubricant through the outlet opening untilsuch time as it is unseated, as will be explained hereinafter. Ifdesired, a removable cap may be placedin the outlet opening duringstorage to prevent entry of dirt into the cartridge and to insureagainst any leakage of the cartridge contents.

In order to urge lubricant from the cartridge into the pump, there isprovided a feed member including a stem E6 slidably mounted in the pumpinlet opening and being cut away at one side to permit the How oflubn'cant around it. The stem carri at its upper end a. circular feedbutton 68 adapted to fit slidably within the flange 50. The lower end ofthe stem 66 is connected to' a crank arm 1U which ls secured to a shaft'l2 rotatably mounted in the pump body. A second crank arm 14 is securedto the shaft 12 outside of the pump body and is pivotally connected to alink 16 lying beside the piston rod i8. The link 16 slidably carries acollar 18 which is secured to the bracket 3|! and has on each side ofthe collar 'IE a second collar 8|! urged toward the center thereofbysprings 82. A pin 84 at the center of the link 16 serves as astop forthe collars 8l), but the collar 'ill is so formed as to slide freelyover the pin.

In use a cartridge is secured to the pump by passing the slots in theconnector plate 52 over the lugs 54 and turning the cartridge to a posi-55 to permit movement of urge lubricant tion shown inrFigure 1. It willbe noted that the flange 50 seats around the pump inlet opening with thefeed button 68 projecting into the cartridge and raising the valve 60from its seat. If air is admitted to the motor the piston IB will bereciprocated, causing the plunger 36 to reciprocate in the-cylinder 38to force lubricant out the outlet opening. On a forward stroke of theplunger the collar 30 will move to the right, as seen in Figure 1,rocking the arm 'I0 and raising the feed button to the position shown.When the piston I6 reaches the forward end of its stroke, it reversesthe valve mechanism and starts on a retractile stroke.` This operationsimultaneously withdraws the plunger 36 from the cylinder and moves thefeed button down to trap lubricant in the cylindrical flange 5U and toforce such lubricant into the pump cylinder. Until such time as theplunger 36 passes the inlet port, the feed button cannot move down intothe iiange 50 and the springs 82 will yield to permit movement of theplunger without moving the feed button. However, as soon as` theend ofthe plunger clears the inlet port, the feed button will be moved down tofill the cylinder.

While one embodiment of the invention has been shown and described indetail, it will be understood that many changes might be made therein,and it is not intended to limit the scope of the invention to the formshown or otherwise than by the terms of the appended claims.

What is claimed is:

1. A pump for lubricant or the like comprising a pump cylinder,'areciprocating plunger in said cylinder, a lubricant supply sourcecommunicating with said cylinder, a feed member reciprocable toward andaway from the cylinder to n from the supply source into the cylinder,and a yielding connection between the plunger and feed member toreciprocate the feed member with the plunger and which will yield theplunger without moving the feed member.

2. A pump for lubricant or the like comprising a pump cylinder, areciprocating plunger in said cylinder, a lubricant supply sourcecommunicating with said cylinder, a feed member movable toward and awayfrom the cylinder to urge lubricant from the supply source into thecylinder, and link and lever member withthe plunger, said link and levermeans including a yielding connection which will yield to permitmovement of the plunger without moving the feed member.

3. A pump for lubricant or the like comprising a pump cylinder, areciprocating plunger in said cylinder, a lubricant supply sourcecommunicating with said cylinder, a feed member movable toward and awayfrom the cylinder to and which will yield to permit movement o f theplunger without moving the feed member.

4. A pump for lubricant or the like comprising a pump cylinder, areciprocating plunger in said cylinder, a lubricant supply sourcecommunicatingwith said cylinder, af feed member movable toward and away'from' the cylinder to urge lubricant from the supply source into thecylinder, a crank connected to said feed member to operate it, a linkconnected to the crank and means connecting the feed member to theplunger to reciprocate the feed lying substantially parallel to theplunger, a collar slidable on the link and connected to the plunger, andsprings carried by the link on opposite sides of the collar and forminga yielding connection between the link and the collar.

5. A pump for lubricant or the like comprising a pump cylinder having aside inlet opening, a

6. A pump for lubricant or the like comprising a pump cylinder having aside inlet opening, a

plunger reciprocably mounted in said cylinder, a lubricant supply sourcecommunicating with said side opening, a feed member slidably mounted insaid inlet opening and adapted to project into said supply source tourge lubricant therefrom into the cylinder, and means connecting thefeed member to the plunger to be operated thereby.

7. A pump for lubricant or the like comprising a pump cylinder having aside inlet opening, a plunger reciprocably mounted in said cylinder, alubricant supply source communicating with said side opening, a feedmember slidably mounted in said inlet opening and adapted to projectinto said supply source to urge lubricant therefrom into the cylinder, acrank connected to the feed member to operate it, and yielding meansconnecting the crank to the plunger.

8. A lubricating device comprising a pump having an inlet opening, alubricant supply cartridge having an outlet opening defined by acylindrical extension and formed for sealing engagementaround said inletopening, and a feed member slidably carried by the pump and reciprocablein said cylindrical extension.

9. A lubricating device comprising a pump having an inlet opening, alubricant supply cartridge having an outlet opening defined by acylindrical extension and formed for sealing en gagement around saidinlet opening, a feed member carried by the pump and slidably fitting insaid cylindrical extension, and means operated by the pump forreciprocating the feed member to force lubricant from the cartridge intothe pump.

10. A lubricating device comprising a pump having an inlet opening, alubricant supply cartridge having an outlet opening defined by acylindrical extension and formed for sealing engagement around saidinlet opening, a feed member carried by the pump and slidably tting insaid cylindrical extension, and a yielding connection between the pumpand feed member to reciprocate the feed member as the pump is operated,said connection being adapted to yield upon a predetermined resistanceto movement of K the feed member.

the feed member as the pump is operated.

12. A lubricating device comprising a pump reciprocable aisance cylinderhaving a side inlet opening, a plunger in the cylinder, a cartridgehaving an outlet opening defined by a cylindrical extension and formedfor sealing engagement around the inlet opening and a feed memberslidable in said cylindrical extension to force lubricant from thecartridge into the pump cylinder.

i3. A lubricating device comprising a pump cylinder having a side inletopening, a plunger reciprocable in the cylinder, a cartridge having anoutlet opening dened by a cylindrical extension and formed for sealingengagement around the inlet opening. a feed member slidably mounted insaid inlet opening and including a part slidable in said cylindricalextension, and a connection between said feed member and the plunger.

i4. A lubricating device comprising a pump cylinder having a side inletopenin a plunger.

reciprocable in the cylinder,y a cartridge having an outlet openingdened by a cylindrical extension and formed for sealing engagementaround the inlet opening, a feed member slidably mounted in'said inletopening and including a part slidable in said cylindrical extension, acrank connected to said feed member to operate it, and a connectionbetween the plunger and said crank.

l5. A lubricating device comprising a pump cylinder having a side inletopening, a plunger reciprccable in the cylinder, a cartridge having anoutlet opening defined by a cylindrical extension and formed for sealingengagement around the inlet opening, a feed member slidably mpunted insaid inlet opening and including a part slidable in said cylindricalextension, a crank connected to said feed member to operate it, and alink connected to said crank and lying substantially parallel to theplunger.

16. A lubricating device comprising a pump cylinder having a side inletopening, a plunger reciprocable in the cylinder, a cartridge having anoutlet opening defined by a cylindrical extension and formed for sealingengagement around the inlet opening, a fastening plate secured to thecartridge and formed with a series of notches for bayonet connectionwith a series of cooperating lugs on the cylinder, said fastening platereinforcing the cylindrical extension, and a feed member slidable insaid extension to force lubricant from the cartridge into the pumpcylinder.

i7. A cartridge for lubricant or the like comprising a substantiallycylindrical body portion, an end closure secured to one en d of the bodyportion formed with an outlet opening, a ange on said end closureforming a cylindrical extension around the outlet opening, plate securedto the end closure around said flange to reinforce the flange.

and a fastening HARRY a. man. .o

